A coeporation of



Apfi 24, 1926.Y 1,667,326

E. H. MARBLE SEWING MACHINE Filed Sept. 29. 1927 2 Sheetsheet 1 April 24, 1928. 1,667,326

E. H. MARBLE SEWING MACHINE Filed sept. 29. 192'/ 2 shears-sneeb 2 Fig. '3 is a sectional view of part of the ingl drawings, in which Patented A121324, 1928.

UNITED STA-TES l, L N1,667,326

PATENT oFF-ICE.

:EDWIN H. MARBLE, E WORCESTER, MASSACHUSETTS, ASSrGNoE To CtRTIS' @MAE-` BLE MACHINE COMPANY, 0F WORCESTER,MASSACHUSETTS, `GORPORATIOBT MASSACHUSETTS.

SEWING MACHINE. I

Application med september 29,1958?.` serial m5221893.

This invention relates to that type of sewing industry, commonly known as the rail- Way sewinggmachine, used for sewing together ends of bolts of cloth, flour sacks, canvas, harness or other heavy Work.

The principal objects of this invention are to provide-means Afor disconnecting the drive and stopping the machine in a readily accessible position where these parts are visible to the operator, so that any threading of the needle or adjustment of the looper can be .made readily, and so that if the gear and Worm vdo not come into proper mesh when an attempt is made to start the machine, that tact can beobserved readily and corrected;`

and to provide improved means for automatically stopping the machine at a definite distance after the needle has left the end of the stitching position. Other objects andadvgntages of the invention will appear herein-l a ter. i

YReference is to be had toi-theraccompanylis a sectional view across a machine constructed in accordance Withthis inven tion; i; y

Fig'. 2"is a plan of the same; `j

mechanism. on the line 3-3 of Fig. 2; 4 A

vFig. is a ,longitudinal sectional View showing/the means for stopping and starting themachinftaken 'onthe line of Fig. 2 ;r

" "Fim 5`is a similar view showingthc automatic stoppingarrangement; j e

g Fig. 6 sidevie'vvof the stopping eccentric; and

I` Fig. 7 is aplanj of th'esame. l In the type ofmachine, mentioned above, the ends ofsucoessive bolts orpieces of cloth or other vmaterialaresewed acrossto attach them` together.4 A sewing mechanism is used for this, purpose mounted. on a carriage which trav'ersesalong a Way or frame froinfselvag'e to selvage, sevvingasingle or double thread as desired. Whe1rit`reaches one end, th'e machine dravvnback by. hand tothe starting pointatthefother side. Several; devices 4have been-'onlth'e' market for this purpose, but as generalthingthe drive isV through a Worm.- whichmeshes `with a vvorm gear that, either directlyorindirectly, meshes ywith a secondary` screw. The ,revolntionQof the screw imparts the necessary motion to'4 the ing machine used in the textile manufactur-- carriage. The stopping ofthe mechanism 'is accomplished by bodily 4moving the, screw away from theworm. ,It Vwhen moved back it does not mesh directly it will bind,` and it isnecessary to turn it to bringit to proper position. l

As heretofore constructedthese parts have` .been under the frame so that the `meshing of thc screw and worm would not be visible to the operator readily, which introduced quite a handicap to the'successful operation of thc machine. It is also desirable that Athe front' of the sewing mechanism be exposed so that any threading of theneedle or adjustment IA of the loopercanbe made readily. This also` was detrimental in the old form of machines in which the operating mechanism is located below `andcovered by the other'iparts. It is also essential that in the correct `operation of the traversing `mot-ion ofthe sewingfmachine i carriage the latter be stopped at adeinite distance beyond the point at which' the needle` leaves the endoi:I the stitching position., It

.is desirable alsotliat anautomatic 'control be provided for securing this result.` lnorder to secure these`advantages,`a machine is shown inthe drawings` embodying the principle of a sewing machine l0 which ismountedon a carriage 11 and moves across the machine..` `There is no improvementherc in .the sewing machine itself. This carriage llzis mounte'don Ways 12in accordancewith thisinvention which supportitand guide it 4 accurately 'acrossf freni one* side to the" other. The machine isope'r'ated :bya motor or `other ineansfnot shown, for: driving an ende less belt `13 Whichhas a long: horizontal loop along the frame and passes over a pulleyifl andunder two idler 'pulleyslfso afs todrive the`fo`rmer, in all"positions'thereof.` This Pulley Mis llOuIled 011 ahandf'wheell'l which is .Xed on4 a shaft l17 andthebe-lt rof 'ats it.y i i This shaft is provided with" a ivormxor chine instationaryA lposition." Tlie'rtation V `of theshaft 17,

,The shaft 2O is mounted "in fixed1 bearings A'on the 'carriage '11.7` '.llherfo, the carriage In order to stop the inoiieinent of the cni'- riagestliewshatt9N., :les Uniowd `bodily away troni the `uf'heel Eorfthispurpose this ,i f not .nionnted inV edi/:bearings on theleerlingeIll dint Qin .beatings on a slide Q tujliieliaisadaptedto-nioie in Ways ltixed to the barriaif'e ll. i 'i i lhe: ide-24o i, )d with e, pair ot bucket wot :etudY 4on .having a circ u1 ai' Q1 t nu wel h isilocuted on. eccentric @hier ,Y Stud ixedinbi'ackets on;ythewearriage ,111. .An `operating han'. ixel 'toi'tbe collar when nas untolthe@position shownr tnin the fcollar'- oni the stud ftlirong'h igliefeccentnic "2,8- and tlie flil: draws fthe" carriage.y ,24 .bach .so that the `Worin is entirely out otinesh with the `Yvjfhoelii 1 5). t. y

heil"V the i handler isfinovegl Lposiftion las hoorn iii-Fig. A J L l A, no-ved .upto tlic'position sliowininFig. 2, so the Worin 12S is in `nieshaSitlrt'lieWheel 1.9. ,i Should it be desired l at any tin'let-ofstopthe rnolveinentfot the cnrriage alor-if ithe. Ways," fory the Vpurpose oi"1 readj strnent oi' ylieneedleor .rethreading otthe saine the tiene le i efsi )le and can flinld. fi lon as nhnridlois"fhoijizontal, the ca" s 1l 1o along. until .the handle cornesinto` contact with la.' dani B1 which eldia tedf to "beiV ied4 yin, adjiistedV posit-ion onfth `v i aine 12;..'l`li,is adjnsti nient s ecnrheml by-thebolt' ehfslot 32,-"a1id l otperjfoiations ,33. v i The .movement i h ndle up thefincline .di-nafs y t eiently 'told'.y ngage the Worm l18 trennt liieelrllfand sopcthe *beltil `oiLaervet s. conniaychine, e tnuwsly i f- A In .ithe operation oyfjthe deviceto sew a lap seam,` the end of one piece oit cloth is brought around back .of the needle' under .thee-rin the seating `niachine aiitl placed ion pins of thefnsualconstructim. The end oit thef-otherf piece entere Vtroni the front and alsoplanedon:the pins. VThe handle lisalthen]brought domini from the vertical i .toi 'horizontel positionWh-ich brings the fro'n teme-M9911iietefinesvh with?iflieerbel lf? It' they do not mesh c0rrectlythe ope vtor `musee thaty fact.and..operateslthe ha idle "ivhentthe si, rotatedv i aroundV tar machine. The-b1inginfyfcr Y p Yto vertical position niereljy moves-the'iivorni farther"ahway7 and the handle is held there '5,` atWhich time the handle 29 moves up the Cain '3l and f ops theitrlliveningi part -otthe IheAV handle up by 'the eccentric construction.

ln this Way it will be seen that the meshingworiniand7 wheel are viible to the operfitovwso th'fatuheran biingthein into inesh properly entllliat the` tirent"r oft' the sewing mach-ine isuegposediso that an)`v` threading o ithe needle(foi'fadjnstinentof the looper an be nitide rea'lily.; there is nothing to ebstluctth "f et the Operator, S6 that the necessary ad nents 'cansfbe iliade iieiAi/i con# yoperates itisstop'ped at I inned by that the Astopping"is autoi-lifte-S le wires -1 s n. delinite point 1 remously deter st nent, an l P() A t VT, l-though Iii-have illustrated and described only oneftoriri the inventionwand'shown it `applied-toma particular' type of sewing -niachinejil aniztware o'fltliehfact that mod'ii'i cations canili l -niatle inr'these respects 1without depaitinm the scope oie-the inientien Tas expigessed *in the Vclaims t lfheretore, I doinotnishtoll "liinitedinthese respect-s, but i u 'A A i dyhet II do claim is 1. In a sewing machine for the purpose descigibed, the combination uiith a carriage, a StationaryraclgV-and. a'feorin driving `device comprising a Worin Wheel on the top of the carriage, of a `slide on` the carriage having a shaft NthereonlaiWorin'on the Ishaftineshin; with Athe worm iif'lieeh iineens for'cnstantlyoprating the said. shaft `in all positions i thereof, Y.andv means moving ,the slide 'backland 4foi-thionfthe'icarriage'lto engage and lisengage tlie'iworin and lWorm Wheel. A

lfu'i'tlierlnoro, i itt: will be` seen apted to be bijoiight in wheel over the carriage adapted to `be engaged by the worm when the slide is moved up, means associated with the wheel for traversing the carriage when the worm wheel rotates', and means for automatically moving the slide back when the carriage has reached a predetermined point in its stroke to move the worm out of mesh with the worm wheel.

et. In a sewing machine of the class described, the combination with a sewing machine proper and a carriage on which it is located, of a driving belt, a pulley engaging the driving belt, a shaft on which the pulley is mounted, a slide on said carriage carrying said shaft, a worm on the shaft, a worm Wheel adapted to be engaged by the worm when the slide is moved up, and means for automatically moving the slide back when the carriage has reached a predetermined point in its stroke.

5. In a sewing machine for the purpose described, the combination with sewing means and a movable carriage on which it Vis mounted, `of a belt having a horizontal loop extending along the carriage, a shaft in posit-ion to be driven by said belt in all positions of the carriage and having means for causing the carriage to move across the machine, a slide on the carriage having bearings for said shaft, a link connected with the slide, an operating handle, and an eccentric on the handle connected with the link whereby the movementof the handle about the axis ofthe eccentric will move the slide back and forth to connect the carriage with the power and disconnect it therefrom.

6. In a sewing machine for the purpose described, the combination with sewing means and a movable carriage on which it is mounted, a belt having a horizontal loop extending along the carriage, and a shaft in position to he driven by said belt in all positions of the carriage and having means for causing the` carriage to move across the machine, of a slide on the carriage having bearings for said shaft, a link connected with the slide, an operating handle, an eccentric on the handle connected with the link, whereby the movement of the handle about the axis of the eccentric will move'the slide back and forth to connect the carriage with the power and disconnect it therefrom, and a cam in fixed position adjustably mounted and so located to be engaged by said handle at the end of the stroke of the carriage and shaped to lift the handle to turn the eccentric and disconnect the feed.

7. In a sewing machine for the purpose described, the combination with sewing means and a movable carriage on which it is mounted, a belt having a horizontal loop extending along the carriage,` and a shaft in` position to be driven by said belt in all positions of the carriage and having means for causing the carriage to move across the machine, of an operating handle, means whereby the movement of the handle will move to connect the carriage with the power and disconnect it therefrom, and a cam in fixed position adjustably mounted and so located as to be engaged by said handle at the end of the stroke of the carriage and shaped to lift f the handle to disconnect the feed.

In testimony whereof I have hereunto affixed my signature.`

EDWIN H. MARBLE. 

